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import pytest
from lagom import Singleton, Construction, Container
from lagom.exceptions import InvalidDependencyDefinition
class MyBasicDep:
basic_value = 5
pass
class ComplexDep:
def __init__(self, some_dep):
self.value = some_dep.basic_value
def test_lambda_arity_zero_works(container: Container):
container.define(MyBasicDep, lambda: MyBasicDep())
assert type(container[MyBasicDep]) == MyBasicDep
def test_lambda_arity_one_is_passed_the_container(container: Container):
container.define(ComplexDep, lambda c: ComplexDep(c[MyBasicDep]))
assert container[ComplexDep].value == 5
def test_lambda_arity_two_results_in_an_error(container: Container):
with pytest.raises(InvalidDependencyDefinition):
container.define(MyBasicDep, lambda _x, _y: MyBasicDep)
meadsteve /
lagom
